What is the Polar Vortex?

What is a polar vortex and what does it mean to state the 'polar

Polar vortex explained: Arctic air, cold weather, freezing temperature

A Polar Vortex Weakening May Lie Ahead. Here's What That Could

Polar vortex set to send arctic blast deep into US starting later

The polar vortex, facts and information

The Polar Vortex Is Collapsing — Here's What That Means for Your

What's going on with the polar vortex, and is an Arctic outbreak

Polar Vortex

Northeast U.S. Latest to Experience Polar Vortex Temperatures

Polar Vortex: What Is It and Why Is It Important?

What is the Polar Vortex?

What is the polar vortex, and how does it change the weather